Monday, January 31, 2011

ODD

Why is it that I woke up very early this morning feeling rejuvenated after only a few hours of sleep, but frequently after eight or nine hours of sleep I'll wake up exhausted? Does it depend on what part of the sleep cycle I wake up during?

Likely you're much more refreshed-feeling when you wake during REM sleep, which is very near the awake state in terms of level of cortical arousal and encephalographic rhythms and such; the transition is much less abrupt.